:root{box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px);
--bg:#f6f8fc;--grid:#dfe5f1;--fg:#1b2233;--mut:#5b6478;--card:#fff;--line:#cfd7e8;--ink:#233f9a;--ans:#b84a0f;--ansbg:#fff1e6}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#10131b;--grid:#1a2030;--fg:#e8ebf4;--mut:#9aa3b8;--card:#171c28;--line:#2c3550;--ink:#8fb0ff;--ans:#ffa066;--ansbg:#2a2018}}
:root[data-theme="dark"]{--bg:#10131b;--grid:#1a2030;--fg:#e8ebf4;--mut:#9aa3b8;--card:#171c28;--line:#2c3550;--ink:#8fb0ff;--ans:#ffa066;--ansbg:#2a2018}
html{scroll-padding-top:env(safe-area-inset-top,0px)}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;background-color:var(--bg);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:22px 22px;color:var(--fg);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
main{max-width:1040px;margin:0 auto;padding:28px 18px 56px}
h1{font:700 clamp(1.8rem,5vw,2.6rem)/1.15 Georgia,"Times New Roman",serif;color:var(--ink);margin:0 0 8px}
h2{font:700 1.45rem/1.2 Georgia,serif;color:var(--ink);margin:40px 0 4px}
.lead,.sub{color:var(--mut);margin:0 0 14px;max-width:62ch}
.legend{background:var(--card);border:1.5px solid var(--line);border-left:5px solid var(--ink);border-radius:6px;padding:12px 16px;max-width:70ch;margin:16px 0}
.legend p{margin:4px 0}
.bar{display:flex;gap:10px;margin:12px 0 0;flex-wrap:wrap}
button{font:inherit;cursor:pointer;border-radius:6px;border:1.5px solid var(--ink);background:var(--card);color:var(--ink);padding:8px 14px;min-height:40px}
button:hover{background:var(--ink);color:var(--bg)}
button:focus-visible{outline:3px solid var(--ans);outline-offset:2px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px;margin-top:12px}
.grid.wide{grid-template-columns:repeat(auto-fill,minmax(330px,1fr))}
.card{background:var(--card);border:1.5px solid var(--line);border-radius:6px;padding:14px;display:flex;flex-direction:column;gap:10px}
.q{margin:0;font-weight:600}
.fig{min-height:130px;display:flex;align-items:center;justify-content:center;color:var(--fg)}
.fig svg{width:100%;max-width:210px;height:auto}
.name{font:600 1.1rem/1.3 Georgia,serif;text-align:center;margin:0;padding:0 6px}
.eq{display:flex;align-items:center;justify-content:center;gap:4px;flex-wrap:wrap}
.eq svg{width:150px;max-width:40%;height:auto}
.sym{font-size:1.3rem;color:var(--mut);padding:0 2px}
.rev{align-self:flex-start;display:inline-block;list-style:none;cursor:pointer;border:1.5px solid var(--ink);border-radius:6px;padding:8px 14px;color:var(--ink);background:var(--card);min-height:40px}.rev::-webkit-details-marker{display:none}.rev:hover{background:var(--ink);color:var(--bg)}.rev:focus-visible{outline:3px solid var(--ans);outline-offset:2px}details[open] .so,details:not([open]) .sc{display:none}details[open]>.ans{margin-top:10px}.bar[hidden]{display:none}
.ans{background:var(--ansbg);border-left:5px solid var(--ans);border-radius:4px;padding:10px 12px;color:var(--fg);animation:in .2s ease-out}
.ans[hidden]{display:none}
.ans svg{width:100%;max-width:210px;height:auto;display:block;margin:0 auto;color:var(--fg)}
.ans .eq svg{width:150px}
.grp{color:var(--mut);font-size:.92rem;display:block;margin-top:4px}
@keyframes in{from{opacity:0}to{opacity:1}}
@media (prefers-reduced-motion:reduce){.ans{animation:none}}

.topic h3{margin:0;font:700 1.1rem/1.25 Georgia,serif;color:var(--ink)}
.topic ul{margin:0;padding-left:1.1rem}.topic li{margin:.3rem 0}
.bar a{font:inherit;border:1.5px solid var(--ink);border-radius:6px;padding:8px 14px;color:var(--ink);text-decoration:none;background:var(--card)}
.bar a:hover{background:var(--ink);color:var(--bg)}
.qz{background:var(--card);border:1.5px solid var(--line);border-radius:6px;padding:14px;margin:12px 0;max-width:760px;min-inline-size:0}
main{counter-reset:good done}
.qt{padding:0;margin:0 0 10px;font-weight:600}
.qz input{position:absolute;opacity:0;width:1px;height:1px}
.qz label{display:block;margin:6px 0;min-height:44px;padding:10px 14px;border:1.5px solid var(--ink);border-radius:6px;background:var(--card);color:var(--ink);cursor:pointer}
.qz label:hover{background:var(--ink);color:var(--bg)}
.qz input:checked{counter-increment:done}
.qz input.c:checked{counter-increment:good done}
.qz input:checked ~ label{pointer-events:none}
.qz input:checked ~ label.c{background:#1f7a4d;border-color:#1f7a4d;color:#fff}
.qz input:nth-of-type(1):checked ~ label:nth-of-type(1):not(.c),.qz input:nth-of-type(2):checked ~ label:nth-of-type(2):not(.c),.qz input:nth-of-type(3):checked ~ label:nth-of-type(3):not(.c),.qz input:nth-of-type(4):checked ~ label:nth-of-type(4):not(.c){background:#b3261e;border-color:#b3261e;color:#fff}
.qz input:nth-of-type(1):focus-visible ~ label:nth-of-type(1),.qz input:nth-of-type(2):focus-visible ~ label:nth-of-type(2),.qz input:nth-of-type(3):focus-visible ~ label:nth-of-type(3),.qz input:nth-of-type(4):focus-visible ~ label:nth-of-type(4){outline:3px solid var(--ans);outline-offset:2px}
.qz .ex{display:none;margin:10px 0 0;padding:10px 12px;background:var(--ansbg);border-left:5px solid var(--ans);border-radius:4px}
.qz input:checked ~ .ex{display:block}
.score{position:sticky;bottom:0;margin-top:22px;padding:12px 14px calc(12px + env(safe-area-inset-bottom,0px));background:var(--card);border-top:2px solid var(--ink);display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap;font:700 1.05rem/1.3 Georgia,serif;color:var(--ink)}
.tally::after{content:"Točno " counter(good) " od " counter(done) " odgovorenih (22 pitanja)"}
.score a{font:inherit;border:1.5px solid var(--ink);border-radius:6px;padding:8px 14px;color:var(--ink);text-decoration:none;background:var(--card)}
.score a:hover{background:var(--ink);color:var(--bg)}